lit: Preserve the PATHEXT variable when running subcommands, this is important on Win32
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86436 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/lit/TestingConfig.py b/utils/lit/TestingConfig.py
index e4874d7..1f5067c 100644
--- a/utils/lit/TestingConfig.py
+++ b/utils/lit/TestingConfig.py
@@ -12,6 +12,7 @@
environment = {
'PATH' : os.pathsep.join(litConfig.path +
[os.environ.get('PATH','')]),
+ 'PATHEXT' : os.environ.get('PATHEXT',''),
'SYSTEMROOT' : os.environ.get('SYSTEMROOT',''),
'LLVM_DISABLE_CRT_DEBUG' : '1',
}